MATHEMATICS HIGH SCHOOL

Simplify 20 + (2 + r).

Answers

Answer 1

Answer:

Answer:

The simplified form of given expression is 22+r.

Step-by-step explanation:

The given expression is

$20+(2+r)$

We need to find the simplified form of the given expression.

The given expression can be written as

$20+2+r$

In this expression r is variable and 20, 2 are constant terms.

Now, combine constant terms.

$(20+2)+r$

On further simplification we get

$(22)+r$

$22+r$

Therefore, the simplified form of given expression is 22+r.

Answer 2

Answer: First remove the parentheses because addition is commutative.
20+2+r
Add 20 and 2 together
r+22
Hope this helps.

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Add 1/2 liter,3/4 liter and 7/8 liter

Answers

first, find a lowest common denominator. The lcd in this equation os 8 so your new fractions would be 4/8, 6/8, and 7/8. You add the numerators (top numbers), which equals 17/8. Then you simplify to 2 1/8 liters.

Write the equations for 74,25a n d 49

Answers

Answer:

The two equations are

1) 25 + 49 = 74

2) 74 - 25 = 49

Step-by-step explanation:

Given numbers 74 , 25 and 49

We have to write the equations using the numbers 74, 25 and 49

Since, we can apply two operations addition and subtraction that involves all the three numbers together.

So first equation becomes,

When we add 25 and 49 we get 74

Written mathematically as 25 + 49 = 74

and second equation becomes,

When we subtract 25 from 74 we get 49

Written mathematically as 74 - 25 = 49

Thus, the two equations are

1) 25 + 49 = 74

2) 74 - 25 = 49

7425 ? 49
and = + in math
74250 + 49

True or False?-If two rectangles have equal areas, then they are congruent.
-If two squares have equal perimeters, then they have equal areas.

Answers

#1

That is false..one could have side lengths of 9 and 1, and the other could have side lengths of 3. Both the areas would be 9, but the figures would not be congruent.

#2

That is true, they must both have the same side length to have the same perimeter, therefore they will also have the same area.

Two similar pyramids have corresponding dimensions in the ratio 3:5 Find the ratio of their volumes